Possibly a dumb question

Presumably, my DL has a coin type battery for keeping the time and date settings etc. - having removed the main batteries for 24hrs, the clock is still correct!
So the question is in two parts a) where the heck is it and b) what type is it?

It might be a dumb qustion but I can't find any reference to it in the book

Thanks.

On my D there is a circular panel on the base plate with a coin slot to allow it to be unscrewed.

I have a DS and I assume that the DL is the same. They do not have a separate battery for the clock etc. I have read somewhere in the manual that if the AA batteries are removed for a considerable time then the clock will loose its setting. I am not sure how long but I think it is several hours.

Regards,
Dave

There were quite a few manufacturing probs with the *ist-D coin cells - shorting out, dead cells etc. I remember several people having to return their *ist-D's...

It appears to be internal in the *ist-DL and could be one of three things:
1. Lithium cell (unlikely as these run out)
2. Rechargeable NiMH/Nicad that's trickle charged from the main AAs
3. Supercap (extremely large capacitor that's used for keeping SRAM & real time clocks running). Trickle charged from the main AAs.

I'd guess it's probably 3. The supercaps can run for up to a couple of weeks and are more reliable that internal rechargeables

Matt

Wow...learn something new everyday.
P.S. ....the only dumb question is the one you didn't ask.....

Thanks folks